34487281 has 4 divisors (see below), whose sum is σ = 35986752. Its totient is φ = 32987812.

The previous prime is 34487269. The next prime is 34487287. The reversal of 34487281 is 18278443.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18278443 = 1427 ⋅12809.

It is a cyclic number.

It is not a de Polignac number, because 34487281 - 2¹⁵ = 34454513 is a prime.

It is a super-2 number, since 2×34487281² = 2378745101545922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 34487281.

It is not an unprimeable number, because it can be changed into a prime (34487287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 749701 + ... + 749746.

It is an arithmetic number, because the mean of its divisors is an integer number (8996688).

Almost surely, 2^34487281 is an apocalyptic number.

It is an amenable number.

34487281 is a deficient number, since it is larger than the sum of its proper divisors (1499471).

34487281 is a wasteful number, since it uses less digits than its factorization.

34487281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499470.

The product of its digits is 43008, while the sum is 37.

The square root of 34487281 is about 5872.5872492454. The cubic root of 34487281 is about 325.5014932254.

The spelling of 34487281 in words is "thirty-four million, four hundred eighty-seven thousand, two hundred eighty-one".